[SOLVED] Unable to execute code on an ESP8266

I have a new development.. I've kept trying the same steps but for some reason it started working. I will try to re-create the steps and post back with another update. So what i recall to have done was

1. Follow this article and downloaded this espruino_1v94.154_esp8266_4mb.tgz file.
   
2. Tried to get an older boot1.4(b1).bin from a ESP8266 firmware - but this did not work and had the same issue.
   
3. Went back to use the boot_v1.6.bin which was there in the original espruino package and used esptool.py to flash the ESP8266. I modified this slightly to mention --flash_size as 4MB instead of 32m (this comes as a warning, so i've modified that).
   
4. Flash the ESP8266
   > esptool.py --port /dev/cu.SLAB_USBtoUART --baud 115200 erase_flash
   
   

Important step here is to disconnect and re-connect the ESP8266 from the USB.

1. Burn the downloaded image
   
   

esptool.py --port /dev/cu.SLAB_USBtoUART --baud 115200 write_flash
--flash_freq 80m --flash_mode qio --flash_size 4MB 0x0000 "boot_v1.6.bin" 0x1000 espruino_esp8266_user1.bin 0x3FC000
esp_init_data_default.bin 0x3FE000 blank.bin

1. Opened up Espruino IDE and connected to 1 of the 2 USBtoUART options that it always displays. And ran the sample code.

   var wifi = require("Wifi");
   wifi.connect("my-ssid", {password: "my-password"}, 
   function(err){if(err)console.log(err);el­se console.log("connected!");})
   

and it started working. I am still testing out other APIs.. Another sample that i was able to do was

This blinks the onboard LED ON and OFF every 500ms.

var isOn = false;
var interval = 500;
function main() {
    setInterval(function () {
        isOn = !isOn;
        digitalWrite(D2, isOn);
    }, interval);
}
main();